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zalisa [80]
3 years ago
9

The Greek alphabet has 24 distinct lowercase letters. How many bits are needed to be able to encode any single lowercase Greek l

etter
Engineering
1 answer:
Alexus [3.1K]3 years ago
4 0

Answer:

You need 5 bits to encode al the 24 greek distinct lowercase letters.

Explanation:

o encode 24 greek distinct lowercase letters, you should be able to write in binary language 24 different combinations.

With 1 bit you have only 2 possible combinations. Not enough.

With 2 bit you have only 4 possible combinations. Not enough.

With 3 and 4 bit you have only 8 and 16 possible combinations. Not enough.

With 5 bit you have 32 possible combinations. This is enough to encode all the 24 Greek letters.

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3 years ago
Give the approximate temperature (in K) at which creep deformation becomes an important consideration for each of the following
andrezito [222]

Answer:

691K, 543K, 725K, 1473K, 240K, 373K

Explanation:

Creep deformation of any metal is the transformational tendency of a metal to distort rapidly or slowly when attacked by any form of mechanical stress. The temperature significant for a metal to deform is gotten by the division of the actual temperature of the metal by its melting point. This is termed homologous temperature which is 0.4 or higher. It is calculated by the equation:

0.4Tm

Therefore for the listed metals...

For Nickel, 0.4Tm = 0.4 ×(1455 + 273) = 691 K

For Copper, 0.4Tm = 0.4 ×(1085 + 273) = 543 K

For Iron, 0.4Tm = 0.4 ×(1538 + 273) = 725 K

For Tungsten, 0.4Tm = 0.4 ×(3410 + 273) = 1473 K

For Lead, 0.4Tm = 0.4 × (327 + 273) = 240 K

For Aluminium, 0.4Tm = 0.4 ×(660 + 273) = 373 K

5 0
3 years ago
The engine of a 1500-kg automobile has a power rat- ing of 75 kW. Determine the time required to accelerate this car from rest t
creativ13 [48]

Answer:

7.72 seconds

The answer is not realistic as the time is very less to reach to a speed of 100 km/hr

also, we have not taken other factors into consideration like wind drag etc.

Explanation:

Data provided in the question:

Mass of the engine = 1500 kg

Power rating = 75 kW = 75,000 W

Initial speed, v₁ = 0

Final speed = 100 km/hr = 100\times\frac{5}{18} = 27.78 m/s

Now,

Power = Work done ÷ Time

also,

Work done = Final energy - Initial energy

= \frac{1}{2}mv_2^2-\frac{1}{2}mv_1^2

= \frac{1}{2}\times1500\times27.78^2-\frac{1}{2}\times1500\times0^2

= 578703.70 J

thus,

75,000 = 578703.70 ÷ time

or

time = 7.716 s ≈ 7.72 seconds

The answer is not realistic as the time is very less to reach to a speed of 100 km/hr

also, we have not taken other factors into consideration like wind drag etc.

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The worst case signal-to-noise ratio at the output of an FM detector occurs when: ________
AlexFokin [52]

Answer:

a. the desired signal is 90 degrees out of phase with the intelligence signal.

Explanation:

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